Description

Key Characters:

Growth Form: Glabrous, many-branched perennial vine.

Stems: Stems slender, glabrous except sparsely tomentose toward base.

Roots:

Leaves: Leaves simple. Alternate, occasionally the lowermost opposite. Blades hastate to sagittate, blades 0.5–3 cm long, 0.4–3.5 cm wide. Surfaces glabrous. Margins entire. Petioles twining, 0.5–3.3 cm long. Stipules absent.

Flowers: Flowers solitary in the leaf axils; peduncles 12–47 mm long, slightly winged toward apex. Calyx 9–14 mm long, glabrous. Corolla red, pink, or violet, spotted and streaked with yellow, white, or violet, incompletely closed by the inflated palate, sparsely puberulent or villous, the tube 13–17 mm long, the lobes 4–8 mm long, the lower 3 projecting forward initially, gradually recurving. Stamens 4, in 2 pairs, included in corolla, not elongating at anthesis, staminode vestigial; filaments basally villous, enlarged toward apex. Ovary superior, 2-carpellate, with as many cells; ovule placentation axile; style 10–13 mm long; stigma conical.

Fruit: Capsules globose; symmetrical; 0.8–1 cm long; the cells markedly unequal; the larger one dehiscing much earlier than smaller one. Seeds dark brown.

Ploidy: 2n = 24

Habitat:

Elevation Range: